Optical homodyne DPSK receiver with optical amplifier

Details Optical homodyne DPSK receiver with optical amplifier Optical homodyne DPSK receiver with optical amplifier

1990-09-20

1993-01-19

Coles, Sr., Edward L.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359189, H04B 1006

Patent

active

051811367

ABSTRACT:
An optical homodyne differential phase shift keying (DPSK) receiver for receiving and demodulating optical input signals, is provided with a power splitter for splitting the input signal into first and second signals, a delay is applied to the second signal, an optical amplifier optically amplifies the delayed second signal, and a balanced noise reduction circuit combines the first signal and the delayed amplified second signal to produce a demodulated output signal.

REFERENCES:
patent: 4817207 (1989-03-01), Smith et al.
patent: 4829598 (1989-05-01), Auracher et al.
patent: 5056122 (1991-10-01), Price
Demodulation of Optical DPSK Using In-Phase and Quadrature Detection, Hodgkinson et al, Jul. 1985.

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